Recent Solutions
Prev Hole
Play Hole
Next Hole
Achievements
Cheevos
Golfers
Solutions
All Holes
12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Billiards
brainfuck
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
Continued Fractions
CSS Colors
Cubes
Day of Week
DFA Simulator
Diamonds
Divisors
Emirp Numbers
Emirp Numbers (Long)
Emojify
Evil Numbers
Evil Numbers (Long)
Factorial Factorisation
Farey Sequence
Fibonacci
Fizz Buzz
Foo Fizz Buzz Bar
Forsyth–Edwards Notation
Fractions
Game of Life
Gijswijt’s Sequence
Happy Numbers
Happy Numbers (Long)
Hexdump
Hilbert Curve
Intersection
Inventory Sequence
ISBN
Jacobi Symbol
Kaprekar Numbers
Kolakoski Constant
Kolakoski Sequence
Leap Years
Levenshtein Distance
Leyland Numbers
ln 2
Look and Say
Lucky Numbers
Lucky Tickets
Mahjong
Mandelbrot
Maze
Medal Tally
Minesweeper
Morse Decoder
Morse Encoder
Multitap Input
Musical Chords
N Queens
Niven Numbers
Niven Numbers (Long)
Number Spiral
Odious Numbers
Odious Numbers (Long)
Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Partition Numbers
Pascal’s Triangle
Pernicious Numbers
Pernicious Numbers (Long)
Poker
Polyominoes
Prime Numbers
Prime Numbers (Long)
Proximity Grid
QR Decoder
Quine
Recamán
Repeating Decimals
Reverse Polish Notation
Reversi
Rijndael S-box
Rock-paper-scissors-Spock-lizard
Roman to Arabic
ROT13
Rule 110
Scrambled Sort
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars GPT
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Tic-tac-toe
Time Distance
Tongue-twisters
Topological Sort
Tower of Hanoi
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
All Languages
><>
ALGOL 68
ArkScript
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
Erlang
F#
Factor
Forth
Fortran
Gleam
Go
GolfScript
Groovy
Haskell
Hexagony
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lua
Nim
OCaml
Pascal
Perl
PHP
PowerShell
Prolog
Python
R
Raku
Rockstar
Ruby
Rust
Scheme
sed
SQL
Swift
Tcl
TeX
V
VimL
Wren
Zig
05AB1E
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
Bytes
Chars
Scoring
Bytes
Chars
Language
All
><>
ALGOL 68
ArkScript
Assembly
AWK
Bash
BASIC
Berry
brainfuck
C
C#
C++
Civet
Clojure
COBOL
Coconut
Common Lisp
Crystal
D
Dart
Elixir
Erlang
F#
Factor
Forth
Fortran
Gleam
Go
GolfScript
Groovy
Haskell
Hexagony
J
Janet
Java
JavaScript
jq
Julia
K
Kotlin
Lua
Nim
OCaml
Pascal
Perl
PHP
PowerShell
Prolog
Python
R
Raku
Rockstar
Ruby
Rust
Scheme
sed
SQL
Swift
Tcl
TeX
V
VimL
Wren
Zig
Experimental Language
05AB1E
APL
Arturo
Befunge
BQN
CJam
CoffeeScript
Egel
Fennel
Harbour
Hare
Haxe
Hush
Hy
iogii
Knight
Lily
Luau
Odin
Picat
Qore
Racket
Rebol
Rexx
Scala
Squirrel
Stax
Uiua
Umka
Vala
Vyxal
Hole
All
12 Days of Christmas
24 Game
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Billiards
brainfuck
Calendar
Card Number Validation
Catalan Numbers
Catalan’s Constant
Christmas Trees
Collatz
Continued Fractions
CSS Colors
Cubes
Day of Week
DFA Simulator
Diamonds
Divisors
Emirp Numbers
Emirp Numbers (Long)
Emojify
Evil Numbers
Evil Numbers (Long)
Factorial Factorisation
Farey Sequence
Fibonacci
Fizz Buzz
Foo Fizz Buzz Bar
Forsyth–Edwards Notation
Fractions
Game of Life
Gijswijt’s Sequence
Happy Numbers
Happy Numbers (Long)
Hexdump
Hilbert Curve
Intersection
Inventory Sequence
ISBN
Jacobi Symbol
Kaprekar Numbers
Kolakoski Constant
Kolakoski Sequence
Leap Years
Levenshtein Distance
Leyland Numbers
ln 2
Look and Say
Lucky Numbers
Lucky Tickets
Mahjong
Mandelbrot
Maze
Medal Tally
Minesweeper
Morse Decoder
Morse Encoder
Multitap Input
Musical Chords
N Queens
Niven Numbers
Niven Numbers (Long)
Number Spiral
Odious Numbers
Odious Numbers (Long)
Ordinal Numbers
PalindromemordnilaP
Pangram Grep
Partition Numbers
Pascal’s Triangle
Pernicious Numbers
Pernicious Numbers (Long)
Poker
Polyominoes
Prime Numbers
Prime Numbers (Long)
Proximity Grid
QR Decoder
Quine
Recamán
Repeating Decimals
Reverse Polish Notation
Reversi
Rijndael S-box
Rock-paper-scissors-Spock-lizard
Roman to Arabic
ROT13
Rule 110
Scrambled Sort
Set
Seven Segment
SI Units
Sierpiński Triangle
Smith Numbers
Spelling Numbers
Star Wars GPT
Star Wars Opening Crawl
Sudoku
Sudoku (Fill-in)
Ten-pin Bowling
Tic-tac-toe
Time Distance
Tongue-twisters
Topological Sort
Tower of Hanoi
Transpose Sentence
Trinomial Triangle
United States
Vampire Numbers
Van Eck Sequence
Zeckendorf Representation
Zodiac Signs
γ
λ
π
τ
φ
√2
𝑒
Experimental Hole
Alphabetic Numbers
Apéry’s Constant
Binary Lambda Calculus
Connect Four
Crossword
CSS Colors (Inverse)
CSS Grid
Ellipse Perimeters
Flags
Floyd-Steinberg Dithering
Gray Code Decoder
Gray Code Encoder
Hexagonal Spiral
Highly Composite Numbers
NFA Simulator
Numbrix
Odd Polyomino Tiling
p-adic Expansion
Polygon Triangulations
QR Encoder
Quadratic Formula
Rectangle Fill
Semiprime Numbers
Smooth Numbers
Snake
Sphenic Numbers
Taxicab Numbers
Turtle
Tutorial
Hole
Golfer
Chars
Time
Submitted
Collatz
CaedenHarper
3,233
5ms
8 mins ago
Collatz
madex
73
3ms
62 mins ago
Collatz
error256
80
30ms
22 hours ago
Collatz
Steffan153
💎
76
23ms
26 hours ago
Collatz
Steffan153
🥇
105
13ms
27 hours ago
Collatz
GolfingSuccess
🥉
109
17ms
29 hours ago
Collatz
jusaka
79
24ms
40 hours ago
Collatz
Steffan153
💎
51
932ms
41 hours ago
Collatz
kasarino
94
390ms
3 days ago
Collatz
madeforlosers
72
92ms
3 days ago
Collatz
madeforlosers
129
42ms
3 days ago
Collatz
madeforlosers
143
26ms
3 days ago
Collatz
madeforlosers
134
25ms
3 days ago
Collatz
madeforlosers
82
5ms
3 days ago
Collatz
madeforlosers
77
160ms
3 days ago
Collatz
madeforlosers
106
62ms
3 days ago
Collatz
madeforlosers
110
1,259ms
3 days ago
Collatz
madeforlosers
120
420ms
3 days ago
Collatz
madeforlosers
69
4ms
3 days ago
Collatz
madeforlosers
92
128ms
3 days ago
Collatz
madeforlosers
210
37ms
3 days ago
Collatz
madeforlosers
60
29ms
3 days ago
Collatz
madeforlosers
53
40ms
3 days ago
Collatz
madeforlosers
68
1,027ms
3 days ago
Collatz
madeforlosers
156
110ms
3 days ago
Collatz
madeforlosers
103
14ms
3 days ago
Collatz
madeforlosers
80
458ms
3 days ago
Collatz
kasarino
94
2ms
3 days ago
Collatz
kasarino
88
19ms
3 days ago
Collatz
kitotch
83
22ms
3 days ago
Collatz
albanian-laundromat
126
27ms
4 days ago
Collatz
madex
52
363ms
4 days ago
Collatz
CaedenHarper
28
168ms
4 days ago
Collatz
madex
75
1,196ms
5 days ago
Collatz
madex
81
2,601ms
5 days ago
Collatz
madex
101
114ms
5 days ago
Collatz
madex
72
23ms
5 days ago
Collatz
madex
57
10ms
5 days ago
Collatz
dokutan
1,515
272ms
5 days ago
Collatz
Yewzir
19
44ms
6 days ago
Collatz
kg583
🥇
105
13ms
6 days ago
Collatz
ASampsonMu31
63
50ms
7 days ago
Collatz
Deppyforce
78
19ms
7 days ago
Collatz
SuperFola
136
2,574ms
9 days ago
Collatz
kg583
🥈
77
18ms
9 days ago
Collatz
blaztoma
51
38ms
9 days ago
Collatz
scpchicken
36
8ms
10 days ago
Collatz
fantaize
91
123ms
10 days ago
Collatz
edsrzf
56
15ms
10 days ago
Collatz
edsrzf
🥇
60
5ms
10 days ago
Collatz
edsrzf
🥈
52
874ms
10 days ago
Collatz
edsrzf
🥇
74
16ms
10 days ago
Collatz
Aquateraneal
86
17ms
11 days ago
Collatz
kTheLemon
76
5ms
13 days ago
Collatz
NickTheEASDude
44
186ms
13 days ago
Collatz
Apfelvater
83
19ms
15 days ago
Collatz
milktea-ish
79
19ms
15 days ago
Collatz
tsschepens
78
2ms
16 days ago
Collatz
snoozingnewt
🥇
74
16ms
16 days ago
Collatz
emgordon154
83
14ms
16 days ago
Collatz
Tycho-Nunnink
38
152ms
17 days ago
Collatz
vyx77
110
61ms
18 days ago
Collatz
SectorCorruptor
78
25ms
19 days ago
Collatz
Languag3
68
16ms
19 days ago
Collatz
parthm2005
83
16ms
20 days ago
Collatz
FranklinJiaChen
84
6ms
20 days ago
Collatz
albanian-laundromat
69
97ms
21 days ago
Collatz
albanian-laundromat
144
121ms
21 days ago
Collatz
Lv0Sys
56
16ms
21 days ago
Collatz
Steffan153
🥇
95
120ms
21 days ago
Collatz
RodAlc24
74
19ms
21 days ago
Collatz
Steffan153
💎
73
68ms
22 days ago
Collatz
Ignacio6D2
76
19ms
22 days ago
Collatz
pph-2203
84
16ms
22 days ago
Collatz
ImanolCiganda
81
25ms
22 days ago
Collatz
Deneb999
104
24ms
22 days ago
Collatz
jesuscbm
75
19ms
22 days ago
Collatz
JOrE20
61
17ms
23 days ago
Collatz
JOrE20
27
154ms
23 days ago
Collatz
FranklinJiaChen
169
82ms
23 days ago